There are 68 books in a bookcase. Each shelf holds 12 books.

How many shelves are needed to hold all the books?

(40 points) i need some . an answer definition is appreciated as well.

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup